How to Limit the Size of the ACS Database by filtering the Security Events
After adding the following ACS filter, the new incoming events cannot be reflected in ACS reports.
adtadmin /setquery /query:"SELECT * FROM AdtsEvent WHERE (HeaderUser='SYSTEM...

PROBLEM ========= Customer says that alerts in the Active Alerts view in OpsMgr console (Monitoring Section) are not updated as expected. It takes a lot of time for those alerts to be Closed. Or the alerts may change to Closed State but may not dissapear...